Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a3ea6028d85a3ef…

MALICIOUS

PDF

42.0 KB Created: 2020-08-05 11:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b15c9e40dc1dcbbe69e0751095950763 SHA-1: e85113b08e771bbaed0cf6ae60f6950bb93541df SHA-256: 4a3ea6028d85a3efca61b1cc07decaa7009ccf2f5414bef4b6e477eab5b3b1da
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=basic+speaking+english+pdf'. The document body, though heavily obfuscated, also contains this URL and other links pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be redirecting the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=basic+speaking+english+pdf In PDF document text
    • http://files.paigelingo2021.com/uploads/1/3/0/7/130738722/5601136.pdfIn PDF document text
    • http://files.torontocatholicteachersguild.com/uploads/1/3/1/3/131398542/pewifetagutisodo.pdfIn PDF document text
    • http://files.palmerdavidart.com/uploads/1/3/1/8/131856646/843985ba0b1ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/2004_nissan_altima_fuse_box_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/pozosowaguxekegafajufikav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/73802037514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/87064293809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/58403612916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/nobuvufisazibasutajalibub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3881/files/witurunumuxajegenukiluzoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1409/2960/files/caterpillar_forklift_parts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/arthur_miller_playing_for_time.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/52364114180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/zubinozepap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/zerajezomofobapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/capablanca_chess_fundamentals.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000661f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661F 5436 bytes
SHA-256: 6384f03eae51981ec346a496a4370d44c5b9deb83565d831be17fa9d23e148a6
font_01_sfnt_off0000789d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x789D 10212 bytes
SHA-256: 7a0eb32c04777eb1567e417d79957e91addd86480e9a8e8d9d42ff6863f68c19

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